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单选题
The object of plugging holes below the waterline on a ship should be to（）.
A
eliminate all water entering the hole
B
only plug holes in machinery or other vital spaces
C
reduce the entry of water as much as possible
D
plug the largest holes first
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考题
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考题
单选题The meaning of slacken her speed is（）.A
increase ship's speedB
slow down ship's speedC
make up ship's speedD
fix up shp's speed
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quartersC
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考题
单选题（）refers to the height from the waterline to the bottom of the ship.A
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FreeboardC
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考题
单选题Reserve buoyancy is（）.A
also called GMB
the void portion of the ship below the waterline which is enclosed and watertightC
affected by the number of transverse watertight bulkheadsD
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考题
单选题In plugging submerged holes on a vessel，rags，wedges，and other materials should be used in conjunction with plugs to（）.A
reduce the water pressure on the hullB
reduce the water leaking around the plugsC
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考题
单选题The apparent wind can be zero when the true wind is from（）.A
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单选题A change of trim may be simply defined as（）.A
the change in difference between the forward and aft draftsB
the sum of free communication，free surface and pocketingC
the moment of inertia of the ship's waterline plane about the athwartship axisD
rolling and listing
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单选题（）is an opening for supplying seawater to condensers, pumps,etclocated in the hull below the waterline and having means for the attachment of associated piping.A
SEA CHESTB
SCUPPERC
SCUTTLED
SEA PORT
考题
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考题
单选题The depth of the ship below waterline measured vertically to the lowest part of the hull is called （）.A
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考题
单选题从水线到船底是“吃水”。（）A
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考题
单选题Which is the winter load waterline on the load waterline mark?（）.A
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考题
单选题All echo-sounders can measure the（）.A
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考题
单选题A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?（）.A
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考题
单选题The object of the both-to-blame collision clause is（）.A
to free the carrying ship from liabilityB
to free the non-carrying ship from liabilityC
to free the ship in the wrong from liabilityD
to free the ship not to blame from liability
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